Electrical connector



Nov. -16, 1948. H. E. soMEs ELECTRICAL CONNECTOR 2 Sheets-Sheet 1 Filed Jan. 11, 1945 O lag-2: O

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, flTTOIPNEY Patented Nov. 16, 1948 Howard E. Somes.

Detroit, Mich., assignor, by

mesne assignments, to The Ohio Crankshaft Company, Cleveland,

Ohio

Ohio, a corporation of 1 Application January 11, 1945, Serial No. 572,317

.6 Claims. 1

This invention relates to electrical connectors and is directed in particular to a connnector which is especially adapted for. use in connection with a high frequency transformer coil, although it has other uses as well.

The primary object of the present invention is to provide a current take-on connector having dual terminals of new and improved yet simple construction.

Another object is to provide a dual-terminal connector comprised of a relatively few parts compactly and conveniently arranged for quick and easy assembly.

With the above and other objects in view which will be apparent from the following description to those skilled in the art to which the invention appertains, the present invention consists in certain features of construction and combinations of parts to be hereinafter described with reference to the accompanying drawings, and then claimed.

In the drawings which illustrate a suitable embodiment of the invention:

Figure 1 is a side elevation of a transformer casing having the connector of the present invention assembled thereto;

Figure 2 is a vertical section taken approximately on line 2--2 of Figure 1;

Figure 3 is a transverse section taken approx imately on line 3-3 of Figure 2; 1

Figure 4 is a section taken approximately on line 4-4 of Figure 2 of the connector only; and

Figure 5 is a section taken approximately on line 5-5 of Figure 4. q

Referring to the drawings in which like numerals refer to like parts throughout the several views, the transformer element which forms no part of the present invention but to which the connector is shown for the purpose of illustration, embodies a two-part, axially divided casing I bolted together by screws 2 and having an opening 3 in the side of one of the parts, projecting face portions 4, 5 and 6 being provided adjacent the opening 3 for attachment of the connector to be presently described.

Disposed within and clamped in place by screws 1 extending through a clamping ring 8 is an annular iron core 9 of laminated taper ground strips, which annulus is recessed at H! to receive and support a fiat, hollow transformer coil H. The turns of the coil I I are insulated from each other and from the core 9 as shown, and the coil ends 12 and I3 are insulated from and extend through a block l4 and into the opening 3. AS

shown in the drawing, the coil ends project somewhat beyond the faces 4, 5 and 6.

The connector of the present invention includes a first or central terminal post [5 having an integral flat arm l6, and a second annular surrounding terminal post I! having a fiatv arm l8. The arm I6 is provided at its end with a counterbored opening 19 to provide a conical seat 20 to receive the chamfered shoulder portion 2| of a cylindrical element 22 having an externally threaded shank 23 extending through the opening l9. Similarly the arm l8 of post I! is provided at its end with a counterbored opening 24 to provide a conical seat 25 to receive the chamfered shoulder portion 26 of a cylindrical element 21 having an externally threaded shank 28.

The two cylindrical elements 22 and 21 are clamped against their respective seats by means of nuts 29 and 30 respectively, threaded on their threaded shanks. These elements are shaped at one end at 32 to receive the coil ends in tightly fitting telescoping relation and are provided with passages 31 through the shanks thereof. The post I! is provided with a central opening 33 of greater diameter, than the post Hi to receive the post I5.

The posts I5 and I1 constitute concentric terminals which are separated from each other by a block 34 of cast or molded insulation. This block is recessed at one side to receive the arm l6 and is provided with an annuar portion 35 through which the post l5 extends. The post ll surrounds the annual portion 35, a portion of the same being recessed at 36 to receive the block 34. In this assembled relation, the arms l6 and H! are disposed at an angle of substantially degrees to eachother, the post I! being recessed to permit disposition of the arms I6 and I8 in substantially the same plane. It is to be noted that the elements 22 and 21 have the same relative location as the coil ends l2 and I3.

Associated with the elements thus assembled is a cast or molded electrical insulating block 31 which is recessed at one side to receive the arms l6 and I8 and provided with annular portions 43 which receive the cylindrical elements 22 and 21. The block 34 is secured to the block 31 by suitable screws 38. Also associated with the assembly is a recessed cover 39 of electrical insulation material which encloses the conductor arm I 8 and is secured to the block by screws 40. This cover extends substantially to the conductor post IT. A suitable screw 4| may additionally secure the block 31 to the post l5, as shown in Figure 5.

The connector assembly thus described is sethrough and said arms having 3 cured to the faces 4. l and O ofthe one part of the casing I by screws 42, the coil ends i! and I! being telescopically received in the cylindrical members 22 and 21 respectively.

The threaded shanks 23 and 28 provide means for the attachment of suitable conduits (not shown) 'for conducting cooling fluid through the coil H. The annular terminal I! provides a means for clamping attachment of a conductor or cable (not shown) and the terminal I, which may be threaded, provides means for convenient attachment of a second conductor or cable (not shown).

If desired, and in some cases, it may be prefenable to have the cylindrical members 22 and 21 preliminarily secured to the coil ends, in which case, after, assembly of the connector unit to the casing, the nuts 29 and 30- are subsequently threaded to the shanks 23 and 28 to provide a good electrical connection with the arms II and It.

The structure described provides a well insulated unit, not only of the parts from each other, but, also, except for the terminals i and H, from human contact. The structure also provides a unit of simple construction, the parts of which may be easily assembled.

It is to be understood that various changes may be made in the detailed construction and arrangement of the parts described without departing from the spirit and and disposed at an angle relative to each other,

a body of electrical conductors and arms insulation insulating said from each other, a mounting block of electrical insulating material abutmeans securing said block to openings thereopenings therethrough aligned with said block openings for connection with spaced terminals of an electrical device.

2. An electrical connector comprising a terminal post having a laterally extending arm at oneend thereof, a second terminal post having a laterally extending arm at one end thereof, said second post being of annular formation and having a recess at said one end circumferentially adjacent its laterally extending arm, said first terminal post being disposed concentrically within said second post and having its laterally extending arm disposed in said recess, said arms ting said arms, and said arms, said block having being substantially in the same plane, a body of electrical insulation insulating said posts from each other and said first mentioned arm from the walls of said recess, and an insulating block secured to said arms, said arms having portions for electrical connection with spaced terminals of an electrical device.

3. An electrical connector comprising inner and outer concentric conductor terminals spaced from each other, each having a laterally extending arm at one end thereof disposed at an angle relative to the other, a molded body of electrical insulation having an annular portion insulating said conductor terminals from each other and an integral channeled portion insulating the arm of the inner conductor terminal and enclosing substance of the invention, the scope of which is defined. by the three sides three sides of the arm of the inner conductor terminal, a molded insulating block of electrical insulation abutting the fourth side of said last- ,mentloned arm and the corresponding side of the other arm, a recessed molded member of electrical insulation enclosing the other three sides of said other arm, and means securing recessed molded member and said channeled portion of said molded body to said insulating block.

4. An electrical connector comprising inner and outer concentric conductor terminals spaced from each other, each having a laterally extending arm at one end thereof disposed at an angle relative to the other, a molded body of electrical insulation having an annular portion insulating said conductor terminals from each other and an integral channeled portion insulating the arm of the inner conductor terminal and enclosing of the arm of the inner conductor terminal, a molded insulating block of electrical insulation abutting the fourth side of said lastmentioned arm and the corresponding side of the other arm, a recessed molded member of electrical insulation enclosing the other three sides of said other arm, and means securing said recessed molded member and said channeled portion of said molded body to said insulating block, each of said arms having an opening therethrough for connection with an electrical conductor and said insulating block having openings therein aligned with the openings in said arms.

5. In an electrical unit having an annular casing and a hollow coil provided with terminal ends extending through said casing in spaced apart relation and having threaded hollow coolant conducting electrical connectors connected thereto, an electrical "connector unit removably secured to said casing and comprising'inner and outer concentric terminal posts insulated from each other, each having a laterally extending conductor arm at one and disposed substantially in the same plane as and extending at an angle relative to the other, an electrical insulating block disposed between said arms and said casing, said block having openings therein spaced apart the same as said hollow connectors, said arms having openings therethrough aligned with said block openings, said threaded connectors extending through said block and arm openings, and threaded means clamping said threaded connectors to said arms.

,6. An electrical connector comprising inner and outer concentric electrical conductors each having an arm, said arms lying in a common ane and disposed at an angle relative to each 0 her, a bridge of electrical insulation insulating said conductors and arms from each other, a mounting block of an electrical insulating material abutting said arms, means securing said block to said arms, and connecting means on said arms for forming an electrical connection between said arms and an electrical device.

- HOWARD E. SOMES.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

